Commit | Line | Data |
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edf88417 AK |
1 | #ifndef __KVM_HOST_H |
2 | #define __KVM_HOST_H | |
6aa8b732 AK |
3 | |
4 | /* | |
5 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
6 | * the COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #include <linux/types.h> | |
e56a7a28 | 10 | #include <linux/hardirq.h> |
6aa8b732 AK |
11 | #include <linux/list.h> |
12 | #include <linux/mutex.h> | |
13 | #include <linux/spinlock.h> | |
06ff0d37 MR |
14 | #include <linux/signal.h> |
15 | #include <linux/sched.h> | |
187f1882 | 16 | #include <linux/bug.h> |
6aa8b732 | 17 | #include <linux/mm.h> |
b297e672 | 18 | #include <linux/mmu_notifier.h> |
15ad7146 | 19 | #include <linux/preempt.h> |
0937c48d | 20 | #include <linux/msi.h> |
d89f5eff | 21 | #include <linux/slab.h> |
bd2b53b2 | 22 | #include <linux/rcupdate.h> |
bd80158a | 23 | #include <linux/ratelimit.h> |
83f09228 | 24 | #include <linux/err.h> |
e8edc6e0 | 25 | #include <asm/signal.h> |
6aa8b732 | 26 | |
6aa8b732 | 27 | #include <linux/kvm.h> |
102d8325 | 28 | #include <linux/kvm_para.h> |
6aa8b732 | 29 | |
edf88417 | 30 | #include <linux/kvm_types.h> |
d77a39d9 | 31 | |
edf88417 | 32 | #include <asm/kvm_host.h> |
d657a98e | 33 | |
cef4dea0 AK |
34 | #ifndef KVM_MMIO_SIZE |
35 | #define KVM_MMIO_SIZE 8 | |
36 | #endif | |
37 | ||
67b29204 XG |
38 | /* |
39 | * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used | |
40 | * in kvm, other bits are visible for userspace which are defined in | |
41 | * include/linux/kvm_h. | |
42 | */ | |
43 | #define KVM_MEMSLOT_INVALID (1UL << 16) | |
44 | ||
f78146b0 AK |
45 | /* |
46 | * If we support unaligned MMIO, at most one fragment will be split into two: | |
47 | */ | |
48 | #ifdef KVM_UNALIGNED_MMIO | |
49 | # define KVM_EXTRA_MMIO_FRAGMENTS 1 | |
50 | #else | |
51 | # define KVM_EXTRA_MMIO_FRAGMENTS 0 | |
52 | #endif | |
53 | ||
54 | #define KVM_USER_MMIO_SIZE 8 | |
55 | ||
56 | #define KVM_MAX_MMIO_FRAGMENTS \ | |
57 | (KVM_MMIO_SIZE / KVM_USER_MMIO_SIZE + KVM_EXTRA_MMIO_FRAGMENTS) | |
58 | ||
9c5b1172 XG |
59 | /* |
60 | * For the normal pfn, the highest 12 bits should be zero, | |
61 | * so we can mask these bits to indicate the error. | |
62 | */ | |
63 | #define KVM_PFN_ERR_MASK (0xfffULL << 52) | |
64 | ||
65 | #define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK) | |
66 | #define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1) | |
67 | #define KVM_PFN_ERR_BAD (KVM_PFN_ERR_MASK + 2) | |
69552c29 | 68 | #define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 3) |
6c8ee57b | 69 | |
9c5b1172 | 70 | static inline bool is_error_pfn(pfn_t pfn) |
83f09228 | 71 | { |
9c5b1172 | 72 | return !!(pfn & KVM_PFN_ERR_MASK); |
83f09228 XG |
73 | } |
74 | ||
9c5b1172 | 75 | static inline bool is_noslot_pfn(pfn_t pfn) |
83f09228 | 76 | { |
9c5b1172 | 77 | return pfn == KVM_PFN_ERR_BAD; |
83f09228 XG |
78 | } |
79 | ||
9c5b1172 | 80 | static inline bool is_invalid_pfn(pfn_t pfn) |
83f09228 XG |
81 | { |
82 | return !is_noslot_pfn(pfn) && is_error_pfn(pfn); | |
83 | } | |
84 | ||
7068d097 XG |
85 | #define KVM_HVA_ERR_BAD (PAGE_OFFSET) |
86 | #define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE) | |
ca3a490c XG |
87 | |
88 | static inline bool kvm_is_error_hva(unsigned long addr) | |
89 | { | |
7068d097 | 90 | return addr >= PAGE_OFFSET; |
ca3a490c XG |
91 | } |
92 | ||
6cede2e6 XG |
93 | #define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT)) |
94 | ||
9c5b1172 | 95 | static inline bool is_error_page(struct page *page) |
6cede2e6 XG |
96 | { |
97 | return IS_ERR(page); | |
98 | } | |
99 | ||
d9e368d6 AK |
100 | /* |
101 | * vcpu->requests bit members | |
102 | */ | |
3176bc3e | 103 | #define KVM_REQ_TLB_FLUSH 0 |
2f52d58c | 104 | #define KVM_REQ_MIGRATE_TIMER 1 |
b209749f | 105 | #define KVM_REQ_REPORT_TPR_ACCESS 2 |
2e53d63a | 106 | #define KVM_REQ_MMU_RELOAD 3 |
71c4dfaf | 107 | #define KVM_REQ_TRIPLE_FAULT 4 |
06e05645 | 108 | #define KVM_REQ_PENDING_TIMER 5 |
d7690175 | 109 | #define KVM_REQ_UNHALT 6 |
4731d4c7 | 110 | #define KVM_REQ_MMU_SYNC 7 |
34c238a1 | 111 | #define KVM_REQ_CLOCK_UPDATE 8 |
32f88400 | 112 | #define KVM_REQ_KICK 9 |
02daab21 | 113 | #define KVM_REQ_DEACTIVATE_FPU 10 |
3842d135 | 114 | #define KVM_REQ_EVENT 11 |
af585b92 | 115 | #define KVM_REQ_APF_HALT 12 |
c9aaa895 | 116 | #define KVM_REQ_STEAL_UPDATE 13 |
7460fb4a | 117 | #define KVM_REQ_NMI 14 |
d6185f20 | 118 | #define KVM_REQ_IMMEDIATE_EXIT 15 |
f5132b01 GN |
119 | #define KVM_REQ_PMU 16 |
120 | #define KVM_REQ_PMI 17 | |
6aa8b732 | 121 | |
5550af4d SY |
122 | #define KVM_USERSPACE_IRQ_SOURCE_ID 0 |
123 | ||
6c474694 | 124 | struct kvm; |
6aa8b732 | 125 | struct kvm_vcpu; |
c16f862d | 126 | extern struct kmem_cache *kvm_vcpu_cache; |
6aa8b732 | 127 | |
743eeb0b SL |
128 | struct kvm_io_range { |
129 | gpa_t addr; | |
130 | int len; | |
131 | struct kvm_io_device *dev; | |
132 | }; | |
133 | ||
786a9f88 | 134 | #define NR_IOBUS_DEVS 1000 |
a1300716 | 135 | |
2eeb2e94 GH |
136 | struct kvm_io_bus { |
137 | int dev_count; | |
a1300716 | 138 | struct kvm_io_range range[]; |
2eeb2e94 GH |
139 | }; |
140 | ||
e93f8a0f MT |
141 | enum kvm_bus { |
142 | KVM_MMIO_BUS, | |
143 | KVM_PIO_BUS, | |
144 | KVM_NR_BUSES | |
145 | }; | |
146 | ||
147 | int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, | |
148 | int len, const void *val); | |
149 | int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len, | |
bda9020e | 150 | void *val); |
743eeb0b SL |
151 | int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, |
152 | int len, struct kvm_io_device *dev); | |
e93f8a0f MT |
153 | int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx, |
154 | struct kvm_io_device *dev); | |
2eeb2e94 | 155 | |
af585b92 GN |
156 | #ifdef CONFIG_KVM_ASYNC_PF |
157 | struct kvm_async_pf { | |
158 | struct work_struct work; | |
159 | struct list_head link; | |
160 | struct list_head queue; | |
161 | struct kvm_vcpu *vcpu; | |
162 | struct mm_struct *mm; | |
163 | gva_t gva; | |
164 | unsigned long addr; | |
165 | struct kvm_arch_async_pf arch; | |
166 | struct page *page; | |
167 | bool done; | |
168 | }; | |
169 | ||
170 | void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu); | |
171 | void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu); | |
172 | int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, | |
173 | struct kvm_arch_async_pf *arch); | |
344d9588 | 174 | int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu); |
af585b92 GN |
175 | #endif |
176 | ||
6b7e2d09 XG |
177 | enum { |
178 | OUTSIDE_GUEST_MODE, | |
179 | IN_GUEST_MODE, | |
c142786c AK |
180 | EXITING_GUEST_MODE, |
181 | READING_SHADOW_PAGE_TABLES, | |
6b7e2d09 XG |
182 | }; |
183 | ||
f78146b0 AK |
184 | /* |
185 | * Sometimes a large or cross-page mmio needs to be broken up into separate | |
186 | * exits for userspace servicing. | |
187 | */ | |
188 | struct kvm_mmio_fragment { | |
189 | gpa_t gpa; | |
190 | void *data; | |
191 | unsigned len; | |
192 | }; | |
193 | ||
d17fbbf7 ZX |
194 | struct kvm_vcpu { |
195 | struct kvm *kvm; | |
31bb117e | 196 | #ifdef CONFIG_PREEMPT_NOTIFIERS |
d17fbbf7 | 197 | struct preempt_notifier preempt_notifier; |
31bb117e | 198 | #endif |
6b7e2d09 | 199 | int cpu; |
d17fbbf7 | 200 | int vcpu_id; |
6b7e2d09 XG |
201 | int srcu_idx; |
202 | int mode; | |
d17fbbf7 | 203 | unsigned long requests; |
d0bfb940 | 204 | unsigned long guest_debug; |
6b7e2d09 XG |
205 | |
206 | struct mutex mutex; | |
207 | struct kvm_run *run; | |
f656ce01 | 208 | |
d17fbbf7 | 209 | int fpu_active; |
2acf923e | 210 | int guest_fpu_loaded, guest_xcr0_loaded; |
d17fbbf7 | 211 | wait_queue_head_t wq; |
34bb10b7 | 212 | struct pid *pid; |
d17fbbf7 ZX |
213 | int sigset_active; |
214 | sigset_t sigset; | |
215 | struct kvm_vcpu_stat stat; | |
216 | ||
34c16eec | 217 | #ifdef CONFIG_HAS_IOMEM |
d17fbbf7 ZX |
218 | int mmio_needed; |
219 | int mmio_read_completed; | |
220 | int mmio_is_write; | |
f78146b0 AK |
221 | int mmio_cur_fragment; |
222 | int mmio_nr_fragments; | |
223 | struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS]; | |
34c16eec | 224 | #endif |
1165f5fe | 225 | |
af585b92 GN |
226 | #ifdef CONFIG_KVM_ASYNC_PF |
227 | struct { | |
228 | u32 queued; | |
229 | struct list_head queue; | |
230 | struct list_head done; | |
231 | spinlock_t lock; | |
232 | } async_pf; | |
233 | #endif | |
234 | ||
4c088493 R |
235 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
236 | /* | |
237 | * Cpu relax intercept or pause loop exit optimization | |
238 | * in_spin_loop: set when a vcpu does a pause loop exit | |
239 | * or cpu relax intercepted. | |
240 | * dy_eligible: indicates whether vcpu is eligible for directed yield. | |
241 | */ | |
242 | struct { | |
243 | bool in_spin_loop; | |
244 | bool dy_eligible; | |
245 | } spin_loop; | |
246 | #endif | |
d657a98e ZX |
247 | struct kvm_vcpu_arch arch; |
248 | }; | |
249 | ||
6b7e2d09 XG |
250 | static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu) |
251 | { | |
252 | return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE); | |
253 | } | |
254 | ||
660c22c4 TY |
255 | /* |
256 | * Some of the bitops functions do not support too long bitmaps. | |
257 | * This number must be determined not to exceed such limits. | |
258 | */ | |
259 | #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) | |
260 | ||
6aa8b732 AK |
261 | struct kvm_memory_slot { |
262 | gfn_t base_gfn; | |
263 | unsigned long npages; | |
264 | unsigned long flags; | |
6aa8b732 | 265 | unsigned long *dirty_bitmap; |
db3fe4eb | 266 | struct kvm_arch_memory_slot arch; |
8a7ae055 | 267 | unsigned long userspace_addr; |
80b14b5b | 268 | int user_alloc; |
e36d96f7 | 269 | int id; |
6aa8b732 AK |
270 | }; |
271 | ||
87bf6e7d TY |
272 | static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot) |
273 | { | |
274 | return ALIGN(memslot->npages, BITS_PER_LONG) / 8; | |
275 | } | |
276 | ||
399ec807 AK |
277 | struct kvm_kernel_irq_routing_entry { |
278 | u32 gsi; | |
5116d8f6 | 279 | u32 type; |
4925663a | 280 | int (*set)(struct kvm_kernel_irq_routing_entry *e, |
1a6e4a8c | 281 | struct kvm *kvm, int irq_source_id, int level); |
399ec807 AK |
282 | union { |
283 | struct { | |
284 | unsigned irqchip; | |
285 | unsigned pin; | |
286 | } irqchip; | |
79950e10 | 287 | struct msi_msg msi; |
399ec807 | 288 | }; |
46e624b9 GN |
289 | struct hlist_node link; |
290 | }; | |
291 | ||
3e71f88b GN |
292 | #ifdef __KVM_HAVE_IOAPIC |
293 | ||
46e624b9 | 294 | struct kvm_irq_routing_table { |
3e71f88b | 295 | int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS]; |
46e624b9 GN |
296 | struct kvm_kernel_irq_routing_entry *rt_entries; |
297 | u32 nr_rt_entries; | |
298 | /* | |
299 | * Array indexed by gsi. Each entry contains list of irq chips | |
300 | * the gsi is connected to. | |
301 | */ | |
302 | struct hlist_head map[0]; | |
399ec807 AK |
303 | }; |
304 | ||
3e71f88b GN |
305 | #else |
306 | ||
307 | struct kvm_irq_routing_table {}; | |
308 | ||
309 | #endif | |
310 | ||
93a5cef0 XG |
311 | #ifndef KVM_MEM_SLOTS_NUM |
312 | #define KVM_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) | |
313 | #endif | |
314 | ||
bf3e05bc XG |
315 | /* |
316 | * Note: | |
317 | * memslots are not sorted by id anymore, please use id_to_memslot() | |
318 | * to get the memslot by its id. | |
319 | */ | |
46a26bf5 | 320 | struct kvm_memslots { |
49c7754c | 321 | u64 generation; |
93a5cef0 | 322 | struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM]; |
f85e2cb5 XG |
323 | /* The mapping table from slot id to the index in memslots[]. */ |
324 | int id_to_index[KVM_MEM_SLOTS_NUM]; | |
46a26bf5 MT |
325 | }; |
326 | ||
6aa8b732 | 327 | struct kvm { |
aaee2c94 | 328 | spinlock_t mmu_lock; |
79fac95e | 329 | struct mutex slots_lock; |
6d4e4c4f | 330 | struct mm_struct *mm; /* userspace tied to this vm */ |
46a26bf5 | 331 | struct kvm_memslots *memslots; |
bc6678a3 | 332 | struct srcu_struct srcu; |
73880c80 GN |
333 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
334 | u32 bsp_vcpu_id; | |
73880c80 | 335 | #endif |
fb3f0f51 | 336 | struct kvm_vcpu *vcpus[KVM_MAX_VCPUS]; |
73880c80 | 337 | atomic_t online_vcpus; |
217ece61 | 338 | int last_boosted_vcpu; |
133de902 | 339 | struct list_head vm_list; |
60eead79 | 340 | struct mutex lock; |
e93f8a0f | 341 | struct kvm_io_bus *buses[KVM_NR_BUSES]; |
721eecbf GH |
342 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
343 | struct { | |
344 | spinlock_t lock; | |
345 | struct list_head items; | |
346 | } irqfds; | |
d34e6b17 | 347 | struct list_head ioeventfds; |
721eecbf | 348 | #endif |
ba1389b7 | 349 | struct kvm_vm_stat stat; |
d69fb81f | 350 | struct kvm_arch arch; |
d39f13b0 | 351 | atomic_t users_count; |
5f94c174 | 352 | #ifdef KVM_COALESCED_MMIO_PAGE_OFFSET |
5f94c174 | 353 | struct kvm_coalesced_mmio_ring *coalesced_mmio_ring; |
2b3c246a SL |
354 | spinlock_t ring_lock; |
355 | struct list_head coalesced_zones; | |
5f94c174 | 356 | #endif |
e930bffe | 357 | |
60eead79 | 358 | struct mutex irq_lock; |
75858a84 | 359 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
360 | /* |
361 | * Update side is protected by irq_lock and, | |
362 | * if configured, irqfds.lock. | |
363 | */ | |
4b6a2872 | 364 | struct kvm_irq_routing_table __rcu *irq_routing; |
75858a84 | 365 | struct hlist_head mask_notifier_list; |
136bdfee | 366 | struct hlist_head irq_ack_notifier_list; |
75858a84 AK |
367 | #endif |
368 | ||
36c1ed82 | 369 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
370 | struct mmu_notifier mmu_notifier; |
371 | unsigned long mmu_notifier_seq; | |
372 | long mmu_notifier_count; | |
373 | #endif | |
5c663a15 | 374 | long tlbs_dirty; |
6aa8b732 AK |
375 | }; |
376 | ||
a737f256 CD |
377 | #define kvm_err(fmt, ...) \ |
378 | pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
379 | #define kvm_info(fmt, ...) \ | |
380 | pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
381 | #define kvm_debug(fmt, ...) \ | |
382 | pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__) | |
383 | #define kvm_pr_unimpl(fmt, ...) \ | |
384 | pr_err_ratelimited("kvm [%i]: " fmt, \ | |
385 | task_tgid_nr(current), ## __VA_ARGS__) | |
f0242478 | 386 | |
a737f256 CD |
387 | /* The guest did something we don't support. */ |
388 | #define vcpu_unimpl(vcpu, fmt, ...) \ | |
389 | kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__) | |
6aa8b732 | 390 | |
988a2cae GN |
391 | static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i) |
392 | { | |
393 | smp_rmb(); | |
394 | return kvm->vcpus[i]; | |
395 | } | |
396 | ||
397 | #define kvm_for_each_vcpu(idx, vcpup, kvm) \ | |
b42fc3cb JM |
398 | for (idx = 0; \ |
399 | idx < atomic_read(&kvm->online_vcpus) && \ | |
400 | (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \ | |
401 | idx++) | |
988a2cae | 402 | |
be6ba0f0 XG |
403 | #define kvm_for_each_memslot(memslot, slots) \ |
404 | for (memslot = &slots->memslots[0]; \ | |
bf3e05bc XG |
405 | memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\ |
406 | memslot++) | |
be6ba0f0 | 407 | |
fb3f0f51 RR |
408 | int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id); |
409 | void kvm_vcpu_uninit(struct kvm_vcpu *vcpu); | |
410 | ||
9fc77441 | 411 | int __must_check vcpu_load(struct kvm_vcpu *vcpu); |
313a3dc7 CO |
412 | void vcpu_put(struct kvm_vcpu *vcpu); |
413 | ||
0ee75bea | 414 | int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align, |
c16f862d | 415 | struct module *module); |
cb498ea2 | 416 | void kvm_exit(void); |
6aa8b732 | 417 | |
d39f13b0 IE |
418 | void kvm_get_kvm(struct kvm *kvm); |
419 | void kvm_put_kvm(struct kvm *kvm); | |
be593d62 | 420 | void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new); |
d39f13b0 | 421 | |
90d83dc3 LJ |
422 | static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm) |
423 | { | |
424 | return rcu_dereference_check(kvm->memslots, | |
425 | srcu_read_lock_held(&kvm->srcu) | |
426 | || lockdep_is_held(&kvm->slots_lock)); | |
427 | } | |
428 | ||
28a37544 XG |
429 | static inline struct kvm_memory_slot * |
430 | id_to_memslot(struct kvm_memslots *slots, int id) | |
431 | { | |
f85e2cb5 XG |
432 | int index = slots->id_to_index[id]; |
433 | struct kvm_memory_slot *slot; | |
bf3e05bc | 434 | |
f85e2cb5 | 435 | slot = &slots->memslots[index]; |
bf3e05bc | 436 | |
f85e2cb5 XG |
437 | WARN_ON(slot->id != id); |
438 | return slot; | |
28a37544 XG |
439 | } |
440 | ||
210c7c4d IE |
441 | int kvm_set_memory_region(struct kvm *kvm, |
442 | struct kvm_userspace_memory_region *mem, | |
443 | int user_alloc); | |
f78e0e2e SY |
444 | int __kvm_set_memory_region(struct kvm *kvm, |
445 | struct kvm_userspace_memory_region *mem, | |
446 | int user_alloc); | |
db3fe4eb TY |
447 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
448 | struct kvm_memory_slot *dont); | |
449 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages); | |
f7784b8e MT |
450 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
451 | struct kvm_memory_slot *memslot, | |
452 | struct kvm_memory_slot old, | |
453 | struct kvm_userspace_memory_region *mem, | |
454 | int user_alloc); | |
455 | void kvm_arch_commit_memory_region(struct kvm *kvm, | |
0de10343 ZX |
456 | struct kvm_userspace_memory_region *mem, |
457 | struct kvm_memory_slot old, | |
458 | int user_alloc); | |
db3fe4eb | 459 | bool kvm_largepages_enabled(void); |
54dee993 | 460 | void kvm_disable_largepages(void); |
2df72e9b MT |
461 | /* flush all memory translations */ |
462 | void kvm_arch_flush_shadow_all(struct kvm *kvm); | |
463 | /* flush memory translations pointing to 'slot' */ | |
464 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, | |
465 | struct kvm_memory_slot *slot); | |
a983fb23 | 466 | |
48987781 XG |
467 | int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages, |
468 | int nr_pages); | |
469 | ||
954bbbc2 | 470 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
05da4558 | 471 | unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn); |
4d8b81ab | 472 | unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
b4231d61 IE |
473 | void kvm_release_page_clean(struct page *page); |
474 | void kvm_release_page_dirty(struct page *page); | |
35149e21 AL |
475 | void kvm_set_page_dirty(struct page *page); |
476 | void kvm_set_page_accessed(struct page *page); | |
477 | ||
365fb3fd | 478 | pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
479 | pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async, |
480 | bool write_fault, bool *writable); | |
35149e21 | 481 | pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn); |
612819c3 MT |
482 | pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault, |
483 | bool *writable); | |
d5661048 | 484 | pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn); |
037d92dc XG |
485 | pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn); |
486 | ||
32cad84f | 487 | void kvm_release_pfn_dirty(pfn_t pfn); |
35149e21 AL |
488 | void kvm_release_pfn_clean(pfn_t pfn); |
489 | void kvm_set_pfn_dirty(pfn_t pfn); | |
490 | void kvm_set_pfn_accessed(pfn_t pfn); | |
491 | void kvm_get_pfn(pfn_t pfn); | |
492 | ||
195aefde IE |
493 | int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset, |
494 | int len); | |
7ec54588 MT |
495 | int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data, |
496 | unsigned long len); | |
195aefde | 497 | int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len); |
e03b644f GN |
498 | int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
499 | void *data, unsigned long len); | |
195aefde IE |
500 | int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, |
501 | int offset, int len); | |
502 | int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data, | |
503 | unsigned long len); | |
49c7754c GN |
504 | int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, |
505 | void *data, unsigned long len); | |
506 | int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc, | |
507 | gpa_t gpa); | |
195aefde IE |
508 | int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len); |
509 | int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len); | |
6aa8b732 | 510 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
e0d62c7f | 511 | int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn); |
8f0b1ab6 | 512 | unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn); |
6aa8b732 | 513 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); |
49c7754c GN |
514 | void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, |
515 | gfn_t gfn); | |
6aa8b732 | 516 | |
8776e519 | 517 | void kvm_vcpu_block(struct kvm_vcpu *vcpu); |
b6d33834 | 518 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
41628d33 | 519 | bool kvm_vcpu_yield_to(struct kvm_vcpu *target); |
d255f4f2 | 520 | void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu); |
6aa8b732 | 521 | void kvm_resched(struct kvm_vcpu *vcpu); |
7702fd1f AK |
522 | void kvm_load_guest_fpu(struct kvm_vcpu *vcpu); |
523 | void kvm_put_guest_fpu(struct kvm_vcpu *vcpu); | |
a4ee1ca4 | 524 | |
d9e368d6 | 525 | void kvm_flush_remote_tlbs(struct kvm *kvm); |
2e53d63a | 526 | void kvm_reload_remote_mmus(struct kvm *kvm); |
6aa8b732 | 527 | |
043405e1 CO |
528 | long kvm_arch_dev_ioctl(struct file *filp, |
529 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 CO |
530 | long kvm_arch_vcpu_ioctl(struct file *filp, |
531 | unsigned int ioctl, unsigned long arg); | |
5b1c1493 | 532 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf); |
018d00d2 ZX |
533 | |
534 | int kvm_dev_ioctl_check_extension(long ext); | |
535 | ||
5bb064dc ZX |
536 | int kvm_get_dirty_log(struct kvm *kvm, |
537 | struct kvm_dirty_log *log, int *is_dirty); | |
538 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, | |
539 | struct kvm_dirty_log *log); | |
540 | ||
1fe779f8 CO |
541 | int kvm_vm_ioctl_set_memory_region(struct kvm *kvm, |
542 | struct | |
543 | kvm_userspace_memory_region *mem, | |
544 | int user_alloc); | |
23d43cf9 | 545 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level); |
1fe779f8 CO |
546 | long kvm_arch_vm_ioctl(struct file *filp, |
547 | unsigned int ioctl, unsigned long arg); | |
313a3dc7 | 548 | |
d0752060 HB |
549 | int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); |
550 | int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu); | |
551 | ||
8b006791 ZX |
552 | int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, |
553 | struct kvm_translation *tr); | |
554 | ||
b6c7a5dc HB |
555 | int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); |
556 | int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); | |
557 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
558 | struct kvm_sregs *sregs); | |
559 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
560 | struct kvm_sregs *sregs); | |
62d9f0db MT |
561 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
562 | struct kvm_mp_state *mp_state); | |
563 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
564 | struct kvm_mp_state *mp_state); | |
d0bfb940 JK |
565 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
566 | struct kvm_guest_debug *dbg); | |
b6c7a5dc HB |
567 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run); |
568 | ||
f8c16bba ZX |
569 | int kvm_arch_init(void *opaque); |
570 | void kvm_arch_exit(void); | |
043405e1 | 571 | |
e9b11c17 ZX |
572 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); |
573 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); | |
574 | ||
575 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); | |
576 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); | |
577 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); | |
578 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id); | |
26e5215f | 579 | int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu); |
d40ccc62 | 580 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu); |
e9b11c17 ZX |
581 | |
582 | int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu); | |
10474ae8 | 583 | int kvm_arch_hardware_enable(void *garbage); |
e9b11c17 ZX |
584 | void kvm_arch_hardware_disable(void *garbage); |
585 | int kvm_arch_hardware_setup(void); | |
586 | void kvm_arch_hardware_unsetup(void); | |
587 | void kvm_arch_check_processor_compat(void *rtn); | |
1d737c8a | 588 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu); |
b6d33834 | 589 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu); |
e9b11c17 | 590 | |
d19a9cd2 ZX |
591 | void kvm_free_physmem(struct kvm *kvm); |
592 | ||
c1a7b32a TY |
593 | void *kvm_kvzalloc(unsigned long size); |
594 | void kvm_kvfree(const void *addr); | |
595 | ||
d89f5eff JK |
596 | #ifndef __KVM_HAVE_ARCH_VM_ALLOC |
597 | static inline struct kvm *kvm_arch_alloc_vm(void) | |
598 | { | |
599 | return kzalloc(sizeof(struct kvm), GFP_KERNEL); | |
600 | } | |
601 | ||
602 | static inline void kvm_arch_free_vm(struct kvm *kvm) | |
603 | { | |
604 | kfree(kvm); | |
605 | } | |
606 | #endif | |
607 | ||
b6d33834 CD |
608 | static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) |
609 | { | |
2246f8b5 AG |
610 | #ifdef __KVM_HAVE_ARCH_WQP |
611 | return vcpu->arch.wqp; | |
612 | #else | |
b6d33834 | 613 | return &vcpu->wq; |
b6d33834 | 614 | #endif |
2246f8b5 | 615 | } |
b6d33834 | 616 | |
e08b9637 | 617 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); |
d19a9cd2 | 618 | void kvm_arch_destroy_vm(struct kvm *kvm); |
8a98f664 | 619 | void kvm_free_all_assigned_devices(struct kvm *kvm); |
ad8ba2cd | 620 | void kvm_arch_sync_events(struct kvm *kvm); |
e9b11c17 | 621 | |
3d80840d | 622 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); |
5736199a | 623 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu); |
682c59a3 | 624 | |
a2766325 | 625 | bool kvm_is_mmio_pfn(pfn_t pfn); |
c77fb9dc | 626 | |
62c476c7 BAY |
627 | struct kvm_irq_ack_notifier { |
628 | struct hlist_node link; | |
629 | unsigned gsi; | |
630 | void (*irq_acked)(struct kvm_irq_ack_notifier *kian); | |
631 | }; | |
632 | ||
633 | struct kvm_assigned_dev_kernel { | |
634 | struct kvm_irq_ack_notifier ack_notifier; | |
62c476c7 BAY |
635 | struct list_head list; |
636 | int assigned_dev_id; | |
ab9f4ecb | 637 | int host_segnr; |
62c476c7 BAY |
638 | int host_busnr; |
639 | int host_devfn; | |
c1e01514 | 640 | unsigned int entries_nr; |
62c476c7 | 641 | int host_irq; |
defaf158 | 642 | bool host_irq_disabled; |
07700a94 | 643 | bool pci_2_3; |
c1e01514 | 644 | struct msix_entry *host_msix_entries; |
62c476c7 | 645 | int guest_irq; |
0645211c | 646 | struct msix_entry *guest_msix_entries; |
4f906c19 | 647 | unsigned long irq_requested_type; |
5550af4d | 648 | int irq_source_id; |
b653574a | 649 | int flags; |
62c476c7 BAY |
650 | struct pci_dev *dev; |
651 | struct kvm *kvm; | |
0645211c | 652 | spinlock_t intx_lock; |
cf9eeac4 | 653 | spinlock_t intx_mask_lock; |
1e001d49 | 654 | char irq_name[32]; |
f8fcfd77 | 655 | struct pci_saved_state *pci_saved_state; |
62c476c7 | 656 | }; |
75858a84 AK |
657 | |
658 | struct kvm_irq_mask_notifier { | |
659 | void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked); | |
660 | int irq; | |
661 | struct hlist_node link; | |
662 | }; | |
663 | ||
664 | void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq, | |
665 | struct kvm_irq_mask_notifier *kimn); | |
666 | void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq, | |
667 | struct kvm_irq_mask_notifier *kimn); | |
4a994358 GN |
668 | void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin, |
669 | bool mask); | |
75858a84 | 670 | |
46e624b9 GN |
671 | #ifdef __KVM_HAVE_IOAPIC |
672 | void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic, | |
673 | union kvm_ioapic_redirect_entry *entry, | |
674 | unsigned long *deliver_bitmask); | |
675 | #endif | |
676 | int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level); | |
bd2b53b2 MT |
677 | int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm, |
678 | int irq_source_id, int level); | |
44882eed | 679 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin); |
3de42dc0 XZ |
680 | void kvm_register_irq_ack_notifier(struct kvm *kvm, |
681 | struct kvm_irq_ack_notifier *kian); | |
fa40a821 MT |
682 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, |
683 | struct kvm_irq_ack_notifier *kian); | |
5550af4d SY |
684 | int kvm_request_irq_source_id(struct kvm *kvm); |
685 | void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); | |
62c476c7 | 686 | |
522c68c4 SY |
687 | /* For vcpu->arch.iommu_flags */ |
688 | #define KVM_IOMMU_CACHE_COHERENCY 0x1 | |
689 | ||
19de40a8 | 690 | #ifdef CONFIG_IOMMU_API |
3ad26d81 | 691 | int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
32f6daad | 692 | void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); |
260782bc | 693 | int kvm_iommu_map_guest(struct kvm *kvm); |
62c476c7 | 694 | int kvm_iommu_unmap_guest(struct kvm *kvm); |
260782bc WH |
695 | int kvm_assign_device(struct kvm *kvm, |
696 | struct kvm_assigned_dev_kernel *assigned_dev); | |
0a920356 WH |
697 | int kvm_deassign_device(struct kvm *kvm, |
698 | struct kvm_assigned_dev_kernel *assigned_dev); | |
19de40a8 | 699 | #else /* CONFIG_IOMMU_API */ |
62c476c7 | 700 | static inline int kvm_iommu_map_pages(struct kvm *kvm, |
d7a79b6c | 701 | struct kvm_memory_slot *slot) |
62c476c7 BAY |
702 | { |
703 | return 0; | |
704 | } | |
705 | ||
32f6daad AW |
706 | static inline void kvm_iommu_unmap_pages(struct kvm *kvm, |
707 | struct kvm_memory_slot *slot) | |
708 | { | |
709 | } | |
710 | ||
260782bc | 711 | static inline int kvm_iommu_map_guest(struct kvm *kvm) |
62c476c7 BAY |
712 | { |
713 | return -ENODEV; | |
714 | } | |
715 | ||
716 | static inline int kvm_iommu_unmap_guest(struct kvm *kvm) | |
717 | { | |
718 | return 0; | |
719 | } | |
260782bc WH |
720 | |
721 | static inline int kvm_assign_device(struct kvm *kvm, | |
722 | struct kvm_assigned_dev_kernel *assigned_dev) | |
723 | { | |
724 | return 0; | |
725 | } | |
0a920356 WH |
726 | |
727 | static inline int kvm_deassign_device(struct kvm *kvm, | |
728 | struct kvm_assigned_dev_kernel *assigned_dev) | |
729 | { | |
730 | return 0; | |
731 | } | |
19de40a8 | 732 | #endif /* CONFIG_IOMMU_API */ |
62c476c7 | 733 | |
d172fcd3 LV |
734 | static inline void kvm_guest_enter(void) |
735 | { | |
8fa22068 | 736 | BUG_ON(preemptible()); |
e56a7a28 | 737 | account_system_vtime(current); |
d172fcd3 | 738 | current->flags |= PF_VCPU; |
8fa22068 GN |
739 | /* KVM does not hold any references to rcu protected data when it |
740 | * switches CPU into a guest mode. In fact switching to a guest mode | |
741 | * is very similar to exiting to userspase from rcu point of view. In | |
742 | * addition CPU may stay in a guest mode for quite a long time (up to | |
743 | * one time slice). Lets treat guest mode as quiescent state, just like | |
744 | * we do with user-mode execution. | |
745 | */ | |
746 | rcu_virt_note_context_switch(smp_processor_id()); | |
d172fcd3 LV |
747 | } |
748 | ||
749 | static inline void kvm_guest_exit(void) | |
750 | { | |
e56a7a28 | 751 | account_system_vtime(current); |
d172fcd3 LV |
752 | current->flags &= ~PF_VCPU; |
753 | } | |
754 | ||
9d4cba7f PM |
755 | /* |
756 | * search_memslots() and __gfn_to_memslot() are here because they are | |
757 | * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c. | |
758 | * gfn_to_memslot() itself isn't here as an inline because that would | |
759 | * bloat other code too much. | |
760 | */ | |
761 | static inline struct kvm_memory_slot * | |
762 | search_memslots(struct kvm_memslots *slots, gfn_t gfn) | |
763 | { | |
764 | struct kvm_memory_slot *memslot; | |
765 | ||
766 | kvm_for_each_memslot(memslot, slots) | |
767 | if (gfn >= memslot->base_gfn && | |
768 | gfn < memslot->base_gfn + memslot->npages) | |
769 | return memslot; | |
770 | ||
771 | return NULL; | |
772 | } | |
773 | ||
774 | static inline struct kvm_memory_slot * | |
775 | __gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn) | |
776 | { | |
777 | return search_memslots(slots, gfn); | |
778 | } | |
779 | ||
66a03505 GS |
780 | static inline unsigned long |
781 | __gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn) | |
782 | { | |
783 | return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE; | |
784 | } | |
785 | ||
0ee8dcb8 XG |
786 | static inline int memslot_id(struct kvm *kvm, gfn_t gfn) |
787 | { | |
788 | return gfn_to_memslot(kvm, gfn)->id; | |
789 | } | |
790 | ||
fb03cb6f TY |
791 | static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level) |
792 | { | |
793 | /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */ | |
794 | return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) - | |
795 | (base_gfn >> KVM_HPAGE_GFN_SHIFT(level)); | |
796 | } | |
797 | ||
d19a748b TY |
798 | static inline gfn_t |
799 | hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot) | |
800 | { | |
801 | gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT; | |
802 | ||
803 | return slot->base_gfn + gfn_offset; | |
804 | } | |
805 | ||
1755fbcc AK |
806 | static inline gpa_t gfn_to_gpa(gfn_t gfn) |
807 | { | |
808 | return (gpa_t)gfn << PAGE_SHIFT; | |
809 | } | |
6aa8b732 | 810 | |
c30a358d JR |
811 | static inline gfn_t gpa_to_gfn(gpa_t gpa) |
812 | { | |
813 | return (gfn_t)(gpa >> PAGE_SHIFT); | |
814 | } | |
815 | ||
62c476c7 BAY |
816 | static inline hpa_t pfn_to_hpa(pfn_t pfn) |
817 | { | |
818 | return (hpa_t)pfn << PAGE_SHIFT; | |
819 | } | |
820 | ||
2f599714 | 821 | static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) |
2f52d58c AK |
822 | { |
823 | set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); | |
824 | } | |
825 | ||
ba1389b7 AK |
826 | enum kvm_stat_kind { |
827 | KVM_STAT_VM, | |
828 | KVM_STAT_VCPU, | |
829 | }; | |
830 | ||
417bc304 HB |
831 | struct kvm_stats_debugfs_item { |
832 | const char *name; | |
833 | int offset; | |
ba1389b7 | 834 | enum kvm_stat_kind kind; |
417bc304 HB |
835 | struct dentry *dentry; |
836 | }; | |
837 | extern struct kvm_stats_debugfs_item debugfs_entries[]; | |
76f7c879 | 838 | extern struct dentry *kvm_debugfs_dir; |
d4c9ff2d | 839 | |
36c1ed82 | 840 | #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
e930bffe AA |
841 | static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq) |
842 | { | |
843 | if (unlikely(vcpu->kvm->mmu_notifier_count)) | |
844 | return 1; | |
845 | /* | |
a355aa54 PM |
846 | * Ensure the read of mmu_notifier_count happens before the read |
847 | * of mmu_notifier_seq. This interacts with the smp_wmb() in | |
848 | * mmu_notifier_invalidate_range_end to make sure that the caller | |
849 | * either sees the old (non-zero) value of mmu_notifier_count or | |
850 | * the new (incremented) value of mmu_notifier_seq. | |
851 | * PowerPC Book3s HV KVM calls this under a per-page lock | |
852 | * rather than under kvm->mmu_lock, for scalability, so | |
853 | * can't rely on kvm->mmu_lock to keep things ordered. | |
e930bffe | 854 | */ |
a355aa54 | 855 | smp_rmb(); |
e930bffe AA |
856 | if (vcpu->kvm->mmu_notifier_seq != mmu_seq) |
857 | return 1; | |
858 | return 0; | |
859 | } | |
860 | #endif | |
861 | ||
9900b4b4 | 862 | #ifdef KVM_CAP_IRQ_ROUTING |
399ec807 AK |
863 | |
864 | #define KVM_MAX_IRQ_ROUTES 1024 | |
865 | ||
866 | int kvm_setup_default_irq_routing(struct kvm *kvm); | |
867 | int kvm_set_irq_routing(struct kvm *kvm, | |
868 | const struct kvm_irq_routing_entry *entries, | |
869 | unsigned nr, | |
870 | unsigned flags); | |
871 | void kvm_free_irq_routing(struct kvm *kvm); | |
872 | ||
07975ad3 JK |
873 | int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi); |
874 | ||
399ec807 AK |
875 | #else |
876 | ||
877 | static inline void kvm_free_irq_routing(struct kvm *kvm) {} | |
878 | ||
879 | #endif | |
880 | ||
721eecbf GH |
881 | #ifdef CONFIG_HAVE_KVM_EVENTFD |
882 | ||
d34e6b17 | 883 | void kvm_eventfd_init(struct kvm *kvm); |
d4db2935 | 884 | int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args); |
721eecbf | 885 | void kvm_irqfd_release(struct kvm *kvm); |
bd2b53b2 | 886 | void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *); |
d34e6b17 | 887 | int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args); |
721eecbf GH |
888 | |
889 | #else | |
890 | ||
d34e6b17 | 891 | static inline void kvm_eventfd_init(struct kvm *kvm) {} |
bd2b53b2 | 892 | |
d4db2935 | 893 | static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args) |
721eecbf GH |
894 | { |
895 | return -EINVAL; | |
896 | } | |
897 | ||
898 | static inline void kvm_irqfd_release(struct kvm *kvm) {} | |
bd2b53b2 | 899 | |
27923eb1 | 900 | #ifdef CONFIG_HAVE_KVM_IRQCHIP |
bd2b53b2 MT |
901 | static inline void kvm_irq_routing_update(struct kvm *kvm, |
902 | struct kvm_irq_routing_table *irq_rt) | |
903 | { | |
904 | rcu_assign_pointer(kvm->irq_routing, irq_rt); | |
905 | } | |
27923eb1 | 906 | #endif |
bd2b53b2 | 907 | |
d34e6b17 GH |
908 | static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args) |
909 | { | |
910 | return -ENOSYS; | |
911 | } | |
721eecbf GH |
912 | |
913 | #endif /* CONFIG_HAVE_KVM_EVENTFD */ | |
914 | ||
73880c80 | 915 | #ifdef CONFIG_KVM_APIC_ARCHITECTURE |
c5af89b6 GN |
916 | static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu) |
917 | { | |
d3efc8ef | 918 | return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id; |
c5af89b6 | 919 | } |
3e515705 AK |
920 | |
921 | bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu); | |
922 | ||
923 | #else | |
924 | ||
925 | static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } | |
926 | ||
6aa8b732 | 927 | #endif |
bfd99ff5 AK |
928 | |
929 | #ifdef __KVM_HAVE_DEVICE_ASSIGNMENT | |
930 | ||
931 | long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
932 | unsigned long arg); | |
933 | ||
934 | #else | |
935 | ||
936 | static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, | |
937 | unsigned long arg) | |
938 | { | |
939 | return -ENOTTY; | |
940 | } | |
941 | ||
73880c80 | 942 | #endif |
bfd99ff5 | 943 | |
a8eeb04a AK |
944 | static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) |
945 | { | |
946 | set_bit(req, &vcpu->requests); | |
947 | } | |
948 | ||
a8eeb04a AK |
949 | static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) |
950 | { | |
0719837c AK |
951 | if (test_bit(req, &vcpu->requests)) { |
952 | clear_bit(req, &vcpu->requests); | |
953 | return true; | |
954 | } else { | |
955 | return false; | |
956 | } | |
a8eeb04a AK |
957 | } |
958 | ||
4c088493 R |
959 | #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT |
960 | ||
961 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
962 | { | |
963 | vcpu->spin_loop.in_spin_loop = val; | |
964 | } | |
965 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
966 | { | |
967 | vcpu->spin_loop.dy_eligible = val; | |
968 | } | |
969 | ||
970 | #else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ | |
971 | ||
972 | static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val) | |
973 | { | |
974 | } | |
975 | ||
976 | static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) | |
977 | { | |
978 | } | |
979 | ||
06e48c51 R |
980 | static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) |
981 | { | |
982 | return true; | |
983 | } | |
984 | ||
4c088493 | 985 | #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ |
bfd99ff5 AK |
986 | #endif |
987 |